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Databases · head to head

Valkey vs Zabbix

Valkey logo

Valkey

Databases

Open-source in-memory data store forked from Redis

From
Free
Rated
-
Full reviewWebsite
Zabbix logo

Zabbix

Networking

Open source infrastructure and network monitoring with distributed proxies and templating

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Valkey younger project, so its track record is short even though the codebase is not; Zabbix the database is the scaling limit, and high frequency polling grows history tables fast enough that untuned installations hit housekeeping stalls and query timeouts within months.
  • They diverge on capability: Valkey covers Redis-compatible, Zabbix covers Agent and agentless collection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Valkey and Zabbix actually diverge.

Attributes where Valkey and Zabbix differ
AttributeValkeyZabbix
Pricing modelOpen source, no licence fee; managed cloud billed separatelyOpen source, no licence fee
PlatformsLinux, macOS, Docker, Self-hostedLinux, Docker, Kubernetes, Web
CategoryDatabasesNetworking

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Valkey

  • Redis-compatible
  • BSD licensed
  • Rich data structures
  • Replication and persistence

Only in Zabbix

  • Agent and agentless collection
  • Templates
  • Low-level discovery
  • Distributed proxies
  • Trigger expressions
  • Escalation actions

What people use each for

The jobs each tool is most often brought in to do.

Valkey

  • Continuing on a permissively licensed in-memory store after the Redis licence changenot Zabbix
  • Caching and session storage where a foundation-governed project is a procurement requirementnot Zabbix
  • Migrating from Redis without rewriting application codenot Zabbix

Zabbix

  • A service provider monitoring thousands of customer devices where per-device commercial licensing is the largest line itemnot Valkey
  • Branch or industrial sites with unreliable links that need local collection and bufferingnot Valkey
  • Mixed estates where the same tool must poll SNMP switches, Linux hosts, Windows servers and Java applicationsnot Valkey
  • Replacing an aging Nagios installation while keeping script-based checks that already existnot Valkey

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Valkey

  • Younger project, so its track record is short even though the codebase is not
  • Divergence from Redis grows over time, so compatibility is strongest near the fork point and weakens as both evolve
  • Ecosystem tooling and documentation still frequently assume Redis, leaving translation work

Zabbix

  • The database is the scaling limit, and high frequency polling grows history tables fast enough that untuned installations hit housekeeping stalls and query timeouts within months.
  • Initial configuration is heavy; getting useful alerting rather than noise requires understanding trigger expressions, macros and template inheritance, which is a multi-week learning curve for a team new to it.
  • The AGPLv3 change at version 7.0 affects anyone offering Zabbix over a network as part of a commercial service, and that obligation is easy to inherit accidentally during an upgrade.
  • The web interface is functional rather than pleasant, and many sites end up running Grafana alongside it purely for presentation, which is a second system to maintain.
  • Upgrades between major versions touch the database schema and can take hours on large history tables, so the maintenance window is proportional to how much data you kept.

Pricing, plan by plan

Valkey

Free
  • ValkeyFree
    • Full functionality
    • Self-hosted
    • No usage limits

Zabbix

Free
  • ZabbixFree
    • No device, node or metric limits
    • Full feature set with no paid edition of the software
    • AGPLv3 from version 7.0 onward
  • Zabbix Technical Support$undefined/year
    • Tiered subscriptions with defined response times
    • Access to Zabbix engineers for configuration and performance issues
    • Bug fix priority and backports

Which should you pick?

Choose Valkey if

  • You need redis-compatible.
  • You want to start without paying.
  • You work on Linux, macOS, Docker, Self-hosted.
  • You also want bsd licensed.
Valkey review

Choose Zabbix if

  • You need agent and agentless collection.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Web.
  • You also want templates.
Zabbix review

Questions people ask

Is Valkey or Zabbix better?
Neither clearly leads. Valkey starts at Free and Zabbix at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Valkey or Zabbix?
Valkey starts at Free and Zabbix at Free.
Does Valkey or Zabbix run on more platforms?
Valkey runs on Linux, macOS, Docker, Self-hosted. Zabbix runs on Linux, Docker, Kubernetes, Web.
Can I use Valkey for free?
Both have a free tier, so you can try either at no cost before committing.
What is Valkey best used for?
Valkey is most often used for continuing on a permissively licensed in-memory store after the redis licence change, caching and session storage where a foundation-governed project is a procurement requirement, migrating from redis without rewriting application code. Of those, continuing on a permissively licensed in-memory store after the redis licence change and caching and session storage where a foundation-governed project is a procurement requirement are not what Zabbix is typically brought in for.
What can Valkey do that Zabbix cannot?
Valkey covers Redis-compatible, BSD licensed, Rich data structures, Replication and persistence. Zabbix covers Agent and agentless collection, Templates, Low-level discovery, Distributed proxies.

Answered from the vendors’ own pages

Valkey: Is Valkey free?

Yes, BSD-licensed open source under the Linux Foundation.

Zabbix: Is Zabbix genuinely free for commercial use?

The software has no licence fee at any scale. From version 7.0 it is AGPLv3, so offering it as a network service to third parties carries source distribution obligations.

Valkey: Why does Valkey exist?

Redis changed its licence away from BSD in 2024. Valkey is the community fork continuing under permissive terms, backed by AWS, Google Cloud and Oracle among others.

Zabbix: What is the real cost of running it?

Database administration and the person who tunes it. Budget for PostgreSQL with TimescaleDB and someone who owns the retention policy.

Valkey: Can I switch from Redis to Valkey?

At the fork point it is drop-in compatible with existing clients and data. The further both projects move from that point, the more you should verify the specific features you use.

Zabbix: How does it compare to a commercial per-device tool?

It removes the licence line entirely and adds an operations line. Below a few hundred devices the commercial tool is often cheaper in total; above that Zabbix wins clearly.

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